80471305 has 8 divisors (see below), whose sum is σ = 96736392. Its totient is φ = 64263168.

The previous prime is 80471299. The next prime is 80471309. The reversal of 80471305 is 50317408.

It can be written as a sum of positive squares in 4 ways, for example, as 60793209 + 19678096 = 7797^2 + 4436^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80471305 - 2⁷ = 80471177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80471309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11062 + ... + 16831.

It is an arithmetic number, because the mean of its divisors is an integer number (12092049).

Almost surely, 2^80471305 is an apocalyptic number.

It is an amenable number.

80471305 is a deficient number, since it is larger than the sum of its proper divisors (16265087).

80471305 is a wasteful number, since it uses less digits than its factorization.

80471305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28475.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 80471305 is about 8970.5799701023. The cubic root of 80471305 is about 431.7314449544.

The spelling of 80471305 in words is "eighty million, four hundred seventy-one thousand, three hundred five".